Steps to Reproduce

<zk xmlns:w="client">
  <navseparator id="ns"/>
  <button w:onClick="zk.$('$ns').getNavbar()" label="call"/>
</zk>

Click the button

Current Result

TypeError: can't access property "Navbar", zul.menu is undefinedzkmax.nav.wpd:911:8
getNavbar zkmax.nav.wpd:911

Expected Result

No error

Debug Information

Just a typo.
The method isn't used by widgets.

Workaround